All that can presently (April 2022) be gleaned about Rosita Mantilla from sheet music covers and by Internet searching is that
she was presumably an American dancer who has been featured on 3 works published between 1908 and 1914.
Her portrait on the left is taken from Old Homestead (1914) music by William H. Penn, and published by Penn Musical Publishing Co., Reading, Pennsylvania, USA.
Surfers are welcome to contribute any further information about this performer.
This list is arranged by composer and contains 3 works performed by Rosita Mantilla who is featured on sheet music covers.
It does not claim to be complete and represents only the number of items located. Keys:ER